Two independent Stereo Channels into a 4.00 signal in a 5.1 Track?

Is this even possible? I need to do this hundreds of times.

Two independent Stereo Channels into a 4.00 signal in a 5.1 Track?

Specifics. It would be real useful if I could find a way of taking two stereo signal channels and create a 4.0 signal going into a 5.1 track. I am using 5.1, but in these cases LFE is not required, nor is the middle channel.

Not at all sure as to how to go about this.

Help appreciated.

Perhaps this post will help.